Severe gales reaching velocities of up to 155km/h (96mph) have caused nearly 90,000 households lacking electricity and led agencies to cancel over 100 flights, according to regional news sources.
The winds are impacting the whole South Island and lower areas of the northern region, per the weather forecasting body.
New Zealand authorities have announced rare high-level wind alerts - the top caution category - in central regions such as Canterbury and Wellington.
Residents have been urged to avoid going outside, refrain from journeys, and prepare for further utility disruptions.
Widespread Damage and Crisis Response
The electricity loss appears to be affecting households mainly in the southern region, though officials say that power was being gradually reinstated.
Local media have reported that in some places structures have suffered roof damage, whereas power lines and trees have been knocked down by the winds.
Within the capital, a individual was lost his life after being struck by a wooden fragment at a frequent walking route on earlier this week.
Meanwhile in Wellington, a individual was blown onto approaching vehicles on a street by a powerful blast, in a event that was recorded in a popular vehicle recording.
Air travel in and out of the urban area have been suspended due to the winds, and certain highways and community centers are also closed.
Meanwhile Canterbury officials have issued a crisis declaration, to assist emergency management operations.
Labor Protests Amid Extreme Weather
The powerful gales on Thursday come as many of school staff, physicians and civil servants take part in what has been called a "significant labor action", demanding higher wages and enhanced employment terms.
However the extreme weather has compelled them to modify various scheduled activities, with some outdoor rallies shifted to interior venues or cancelled.
Comparable winds are also sweeping Australia, bringing a high-temperature event to the remote areas.
Officials have declared flame prohibitions for apprehension regarding wildfires.
